<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2016/01/31/160131153346_supermemoria_2_624x351_istock_nocredit.jpg>
<http://www.bbc.com/mundo/noticias/2016/02/160131_vert_fut_hipertimesia_memoria_autobiografica_yv>